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Carbon Dioxide Absorption in Triethanolamine Aqueous Solutions: Hydrodynamics and Mass Transfer
Author(s) -
López Ana B.,
La Rubia M. Dolores,
Navaza José M.,
Pacheco Rafael,
GómezDíaz Diego
Publication year - 2014
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201300603
Subject(s) - triethanolamine , mass transfer , mass transfer coefficient , stoichiometry , carbon dioxide , chemistry , aqueous solution , absorption (acoustics) , bubble , analytical chemistry (journal) , chemical reaction , bubble column reactor , reaction mechanism , chemical engineering , materials science , gas bubble , chromatography , catalysis , organic chemistry , parallel computing , computer science , engineering , composite material
The carbon dioxide absorption process by triethanolamine aqueous solutions was analyzed in a bubble‐column reactor taking into account the chemical reaction mechanism, gas‐liquid interfacial area, and mass transfer rate. A speciation study of this gas‐liquid system was developed by 1 H and 13 C NMR spectroscopy in order to obtain the reaction mechanism and stoichiometry. The gas‐liquid interfacial area was evaluated considering the variations of bubble size distribution and gas holdup during the operation time. The liquid‐phase mass transfer coefficient was calculated from the carbon dioxide absorption rate data by interfacial area evolution and reaction stoichiometry.